Systems and methods for analog image sensing and processing

Abstract

Analog image processing systems and methods are provided. The systems are configured to convert a pixel output signal to a time pulse without analog to digital signal conversion. Pixel output voltage is sampled and the pixel voltage is applied to a capacitor. A comparator configured to sense the pixel voltage on the capacitor as the capacitor is discharged generates output time pulses. The output time pulse is proportional to the pixel voltage and may be processed by an all-analog neural network to perform functions such as object detection, object classification, image quality enhancement and always-on image processing with low power consumption.

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